Where does peanut butter actually sit nutritionally?

According to Dietitians NZ’s Lily Henderson, peanut butter can absolutely be part of a healthy everyday diet.

“Peanut butter can be a simple, practical tool to build more balanced meals and snacks by adding healthy fats, protein and fibre,” she says.

Unlike jam, honey or chocolate spreads, peanut butter naturally contains protein, fibre and unsaturated fats, along with nutrients including magnesium and vitamin E.

The Heart Foundation recommends regularly including nuts and seeds as part of a heart-healthy eating pattern.

Research has also linked regular nut consumption with lower rates of coronary heart disease.

So why do many people still think peanut butter is unhealthy?

The calorie question

The biggest issue with peanut butter is not that it is inherently “bad” – it is that it is extremely energy-dense.

A couple of generous spoonfuls can contain more calories than people realise, especially because peanut butter is one of those foods that tends to be eyeballed rather than measured.

But calorie density alone does not make a food unhealthy.

Large population studies consistently show that people who regularly eat nuts do not generally gain more weight than those who avoid them.

In fact, people who eat nuts regularly often have lower body weights overall, partly because foods rich in protein, fat and fibre help keep people fuller for longer.

The bigger nutritional divide is not really peanut butter versus no peanut butter. It is minimally processed peanut butter versus heavily processed spreads pretending to be peanut butter.

What makes a good peanut butter?

One of the simplest ways to judge a peanut butter is to flip the jar around and read the ingredients list.

“A good indicator of quality is a short, simple ingredients list,” says Henderson. “Ideally, the product should be as close as possible to whole peanuts.”

That usually means products containing:

Some brands also use hi-oleic peanuts, which are naturally higher in monounsaturated fats – the same type of fat found in olive oil. They also tend to be more resistant to going rancid.

Natural vs processed peanut butter

One thing that often confuses shoppers is oil separation.

For years, many people assumed the layer of oil sitting on top of natural peanut butter meant something had gone wrong. In reality, it is often a sign the peanut butter contains fewer stabilisers and additives.

“If oil has pooled at the top of the jar, simply stir it back through,” says registered dietitian Julia Sekula.

More processed peanut butters often contain added vegetable oils to create a smoother, more uniform texture and extend shelf life. These products can still fit into a healthy diet, but they generally contain a lower percentage of peanuts overall.

What about sugar and salt?

This is where some peanut butters start drifting closer to dessert territory.

Some products contain surprisingly high amounts of added sugar, particularly flavoured or chocolate-style spreads. Others contain significantly more sodium than shoppers might expect.

“Added sugar is one of the main things to avoid in an everyday peanut butter,” says Sekula. “A shorter, simpler ingredients list is generally a good sign that a product is less processed.”

Sodium levels can also vary widely between brands – from virtually none to around 600mg per 100g.

Does smooth or crunchy matter?

Not particularly.

Crunchy peanut butter simply retains more peanut pieces, while smooth is blended further for consistency. Nutritionally, there is very little difference between the two.

The more important factors are the overall ingredients – particularly added sugar, oils and salt.

Herald picks: Peanut butters that stack up well nutritionally

Using the criteria above – high peanut percentages, minimal added ingredients, lower sodium and no added sugar – these supermarket options are among the stronger everyday choices

Peanut butters to limit or treat more occasionally

Some products are higher in added sugar, oils, sodium or additives and are probably better treated as occasional options rather than everyday staples.

These include:

That does not mean these products are “bad” or off-limits – just that nutritionally they sit closer to a sweet spread than a minimally processed peanut butter.

Peanut butter is probably healthier than many people assume – particularly when compared with the sugary spreads it often sits beside on supermarket shelves.

Choose the highest peanut percentage you can reasonably afford, look for minimal unnecessary extras and remember that calorie-dense does not automatically mean unhealthy.

Herald contributor Nikki Birrell has worked in food and travel publishing for nearly 20 years.